Knife



FIG. 1 is a side view of the knife embodying the design invention;

FIG. 2 is a top view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a side view thereof opposite to the side view of FIG. 1.

The broken line showings of the knife blade are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a knife, as shown and described. 